I'm purchasing a box of cast performance solid 44 mag 300 grain bullets tomorrow after hearing some suggestions from the people here. I will be using win 296 powder and WLP primers out of my taurus 7.5 inch revolver. I can't find any reloading data for this bullet. Anyone know what the min and max for this combination of bullet and powder is? Thanks

As long as they fit your cylinder, the bullets should be crimped in the crimp groove, so min and max are pretty much moot points.

I'd start with jacketed data from Hodgdon - like this:

300 GR. HDY XTP Winchester 296 .430" 1.600" 18.0 1266 35,100 CUP 19.0 1325 38,800 CUP

Your pressures will PROBABLY be a little lower due to the cast bullet vs. jacketed. I've used CastPerformance bullets in my .454 Casull and loved them. Very accurate and good performance.

Thanks Jon. Just what I was looking for.